Wagerweb.com's odds on the sex of Brad and Angelina's baby

Wagerweb.com, a sportsbook, racebook and casino online, has set odds on the gender of Angelina and Brad’s baby. They are also letting people lose, I mean, bet their money on whether they have twins or triplets. The odds that they will have a boy or a girl are each 7:5. Doesn’t that mean that the odds their baby being a girl or a boy is exactly the same? So what’s the point?

The odds that they will have male or female or male/female twins is 50:1 and the odds they will have triplets is 150:1.